forecast September 15, 2020 12:16 pm Sunny and Cool Tuesday Tuesday: Sunny and cool with some Western U.S. wildfire smoke. Highs in the 60s. Overnight Tuesday: Clear, cool. Lows in the 40s. Wednesday: Becoming breezy and milder with sun. Highs in the 70s. US & World Videos 2:27 Mother speaks out after school shooting threat in Milton 0:39 Police respond to incident in Whitinsville 2:31 Billerica police sergeant killed in crash honored at funeral 2:05 MIT monitors pair of opposing protests on campus 3:41 Cool air to linger over Boston into the weekend